Heating-furnace.



w. N. BEST. HEATING FURNAGE. APPLICATION FILED 00T 22 1907 through which pass the hot gases from the nular wall 1.1. any suitable means for facilitatinr the re- \\'ILI;IAI\I NEWTON BEST, OF NEW YORK, Y.

HEATING-FU'ENACE.

Specification of Letters Patent. Application filed October 22,

Patented sept. 22, 190s. 1907.A Serial No. 398,621.

To all whom 'it may concern."

Be it known that I, WILLIAM NEWTON BEST, a citizen of the Unit-ed States, and a resident of the city of New York, borough of. Brooklyn, in the county of Kings and State of New York, have invented. a new and Imroved Heating-Furnace, of which the folowing is a full, clear, and exact description.

This invention relates to certain improvements in heating furnaces adapted for the heating of railroad tires or other bodies, and relates more -particularly to the wall structure of the furnace and the means for delivering the heatingr medium to the interior thereof. The source of heat is preferablyT a liquid or gaseous'fuel burner, and the inlet burner is so constructed as to give 'a' uniform distribution of heaty throughout the interior of the furnace, i f

Reference is to be had tothe accompanying drawings, forming a part of this specification, in which similar characters of reference ures, and4 in which tions. These passages extend u ylimer wall 11 Figure 1 "is a vertical central section through a furnace constructed In accmdance wlth my mventlon and adapted lor use in heating railroad tires, Fig. 2 is a transverse section of a ortion thereof, taken on the line 2 2 of Flg. 1 Fig. 3 is a central vertical section through a modified form of furnace and Fig. 4.is a top plan view thereof.

In the specific form of my im noved vfurnace illustrated in Figs. 1 and 2, Ilprovide an annular chamber. 10, formed by two concentric walls 11 and 12, both of said walls being formed of fire-brick, asbestos, or other suitable heat insulating non-combustible material. The outer wall 12, which may,'if desired, be inclosed by a sheet metal casing 14, supports av removable cover 13, normally' closlng the upper end thereof and spaced a short distance above the top of the inner an- The cover is provided with moval thereof, said means being il ustrated as two rings disposed upon opposite sides of the center'. thereof. The bottom or floor 15 of the chamber is formed of one or more layers of slabsor bricks of heat insulating material., The inner wall 11 preferably closed at the top by a plate v1.6a and carries a transverse wall 16 intermediate its height.

The lower portion of the annular wall 11 and said transverse wall 16 form the heat-dis-l ,tributing chamber 1.7. A- conduit 18 leads beneaththe floor 1.5 and is curved upward toV terminate within the chamber 17.` The Wall 11 below the partition 16 is provided with a plurality of passages 19, so dlsposed that the ot gases entering the chamber 17 from the conduit 1S may pass intothe heating chamber 1() at the bottom thereof and in all direc- Wardl y and preferably slightly tangential y, or are curved so to give the gases entering the heating chamber a substantially helical movement as they rise'from the inlet pas- Sages 1 9 to a suitable vent 20m the upperwall of the chamber. In the heating-of tires, this movement of the hot gases from the passages 19 is vespecially advantageous.

In Fig. 1, I have illustrated a plurality of tires'A, arranged one above the other and supported above the bottom 15 by small spacing blocks 21. The tires surround the and the gases in escaping through the passages 19 strike the inner wall of the tires at an angle and travel upward into engagement with all of the tires, and in uniform engagement with all portions of the inner surface.

"lhe inlet passage 18 tothe distributingl chamber 17 leads froina point adjacent the outer side gf the outer wall 1.2. As shown, there is formed a Well 22, outside of the outer wall 12 and extending below the floor 15. This well contains a burner 23 having an oil conduit and 4a steam or air conduit leading thereto, and having its discharge nozzle at the diverging inlet of the passage 18. If steam is employed in the burner, it is often necessary to supply additional air, and for thisI purpose, I provide a conduit 24 leading into the well and terminating Within the fanshaped entrance of the )assage 1.8. The upper portion of the Wall] 1,1 becomes highly )cated by the gases, and this heat is radiated to the tires or other articles within the heating chamber, even after thcsupply of heat from the burner has been sluit ofi". V

By varying the shape of the heating chamber, it maybe adapted for many other purposes than that above described. The specific form illustrated inlfigs. 3 and 4 is especially adapted for heating varnish kettles., r)ut all of the parts are substantially the same as those described in the iirs't-nienlhe outer wall 12a 1s of con-f tioned form. siderably less diameter and extends to a somewhat higher elevation, wlnle the upper portionof the inner Wall. 11 is eliminated, the partitionl forming the top of the hea/tdistributing chamber and disposed at a lower elevation in respect to the top of'ithe heatin chamber than is the transverse Wall 16 o t 1e first-mentioned form. A suitable track including rails 25 is disposed adjacent the up er end of the heating chamber, and a suita le truck carrying the varnish kettle, or eth1/i' receptacle or article, to be heated, may be run along the track until it is directliT over the heating chamber. This is especially desirable in heating substances to a prediterniined temperature or condition, and then immediatel removing them l from' the influence of t ie heat. In both forms, the burner 23, Well 22, de-

livry passage 18, distributing chamber 17,

inlet assages 19, and conduit 24 are substantially identical to those shown in the other views.

Having thus describediny invention, I claim as /new and desire to secure by Letters Patent:

1. A heating furnace, comprising two concentric annular caslngs, the inner casing having a transverse Wall, and Ineens for delivering a heating medium to the interior of the v circling said inner casing, said inner casing .medium to the interior vof the inner casing,

the Walls of said inner casing boing provided with a plurality ol' outlet passages for delivering the heat against the inner surface of said. tires and a cover and an exhaust gas escape passage for said outer casing,

4' A heating furnace, comprising a casing having a iloor and an annular imperforzite IWall, means for admitting the article to be heated tliriiugh the top of the casing, a centrally-disposed chamber Within said :asir and having' a pluralityA of passages 'throi the Wall thereof, a ncli disposed outside oi" the annular wall and extciniing down into said floor, a delivery passage extending bcv neath said floor from said xii-cli to the interior ,g

of said chamber, and a [luid fuel burner with in said well and delivering to the outer und of said passage.

in testimony.whereof l have signed my name to this spcciiicaiion in the presence of two subscribing ivitncsscs.

VHLlilAM NEW'IO BEST. 

